Home / 15,779.59-21,775.90-8,706.22

Finding the Fourth Proportional to 15,779.59, 21,775.90 and 8,706.22

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Solution

The fourth proportional to 15,779.59, 21,775.90 and 8,706.22 is: 12,014.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.59 : 21,775.90 = 8,706.22 : x
  2. Step 2: Convert to fraction form
    15,779.59/21,775.90 = 8,706.22/x
  3. Step 3: Cross multiply
    15,779.59x = 21,775.90 × 8,706.22
  4. Step 4: Simplify right side
    15,779.59x = 189,585,645.45
  5. Step 5: Solve for x
    x = 189,585,645.45/15,779.59
  6. Step 6: Final answer
    x = 12,014.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.